mirror of
https://github.com/RGBCube/serenity
synced 2025-07-29 12:17:36 +00:00
ae21002cb5
This is a minor bugfix release, which to my knowledge contains nothing of importance to us. However, there is one QoL change to our patches. We no longer force `-fpic` in the compiler driver, and instead use the `--enable-default-pie` configure option to generate position-independent code suitable for executables. For building shared libraries, the `-fpic` flag must be specified explicitly.
67 lines
1.9 KiB
Markdown
67 lines
1.9 KiB
Markdown
# Patches for gcc on SerenityOS
|
|
|
|
## `0001-Add-a-gcc-driver-for-SerenityOS.patch`
|
|
|
|
Add a gcc driver for SerenityOS
|
|
|
|
This patch adds support for the `*-*-serenity` target to gcc.
|
|
|
|
It specifies which flags need to be passed to the linker, defines the
|
|
__serenity__ macro, sets the correct underlying type of `size_t` and
|
|
`ptrdiff_t`, and enables IFUNCs.
|
|
|
|
|
|
## `0002-fixincludes-Skip-for-SerenityOS-targets.patch`
|
|
|
|
fixincludes: Skip for SerenityOS targets
|
|
|
|
`fixincludes` is responsible for fixing mistakes in system headers that
|
|
rely in compiler extensions that GCC doesn't support or cause errors in
|
|
C++ mode.
|
|
|
|
Our headers don't have such problems, so this hack is of no use for us.
|
|
|
|
## `0003-libgcc-Build-for-SerenityOS.patch`
|
|
|
|
libgcc: Build for SerenityOS
|
|
|
|
This patch enables building gcc's own C runtime files, and sets up
|
|
exception handling support.
|
|
|
|
|
|
## `0004-libgcc-Do-not-link-libgcc_s-to-LibC.patch`
|
|
|
|
libgcc: Do not link libgcc_s to LibC
|
|
|
|
The toolchain is built before LibC, so linking to the C runtime library
|
|
would fail.
|
|
|
|
|
|
## `0005-i386-Disable-math-errno-for-SerenityOS.patch`
|
|
|
|
i386: Disable math errno for SerenityOS
|
|
|
|
SerenityOS uses exceptions for math error handling, which allows the
|
|
compiler to do more optimizations on calls to math functions. This patch
|
|
has the effect of setting -fno-math-errno by default.
|
|
|
|
## `0006-libstdc-Support-SerenityOS.patch`
|
|
|
|
libstdc++: Support SerenityOS
|
|
|
|
During the toolchain build, SerenityOS libraries are not available, so
|
|
we have to manually tell libstdc++ about what our LibC supports.
|
|
|
|
In most places, we take the Newlib code paths.
|
|
|
|
|
|
## `0007-libstdc-Build-static-library-with-fPIC.patch`
|
|
|
|
libstdc++: Build static library with -fPIC
|
|
|
|
We want the libstdc++.a library to contain -fPIC code in order to link
|
|
it statically into LibC/our shared objects. However, the build system
|
|
forces no-pic/pie instead.
|
|
|
|
This hack is from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58638
|
|
|